1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_INET_DIAG_H_
3#define _UAPI_INET_DIAG_H_
4
5#include <linux/types.h>
6
7/* Just some random number */
8#define TCPDIAG_GETSOCK 18
9#define DCCPDIAG_GETSOCK 19
10
11#define INET_DIAG_GETSOCK_MAX 24
12
13/* Socket identity */
14struct inet_diag_sockid {
15	__be16	idiag_sport;
16	__be16	idiag_dport;
17	__be32	idiag_src[4];
18	__be32	idiag_dst[4];
19	__u32	idiag_if;
20	__u32	idiag_cookie[2];
21#define INET_DIAG_NOCOOKIE (~0U)
22};
23
24/* Request structure */
25
26struct inet_diag_req {
27	__u8	idiag_family;		/* Family of addresses. */
28	__u8	idiag_src_len;
29	__u8	idiag_dst_len;
30	__u8	idiag_ext;		/* Query extended information */
31
32	struct inet_diag_sockid id;
33
34	__u32	idiag_states;		/* States to dump */
35	__u32	idiag_dbs;		/* Tables to dump (NI) */
36};
37
38struct inet_diag_req_v2 {
39	__u8	sdiag_family;
40	__u8	sdiag_protocol;
41	__u8	idiag_ext;
42	__u8	pad;
43	__u32	idiag_states;
44	struct inet_diag_sockid id;
45};
46
47/*
48 * SOCK_RAW sockets require the underlied protocol to be
49 * additionally specified so we can use @pad member for
50 * this, but we can't rename it because userspace programs
51 * still may depend on this name. Instead lets use another
52 * structure definition as an alias for struct
53 * @inet_diag_req_v2.
54 */
55struct inet_diag_req_raw {
56	__u8	sdiag_family;
57	__u8	sdiag_protocol;
58	__u8	idiag_ext;
59	__u8	sdiag_raw_protocol;
60	__u32	idiag_states;
61	struct inet_diag_sockid id;
62};
63
64enum {
65	INET_DIAG_REQ_NONE,
66	INET_DIAG_REQ_BYTECODE,
67	INET_DIAG_REQ_SK_BPF_STORAGES,
68	INET_DIAG_REQ_PROTOCOL,
69	__INET_DIAG_REQ_MAX,
70};
71
72#define INET_DIAG_REQ_MAX (__INET_DIAG_REQ_MAX - 1)
73
74/* Bytecode is sequence of 4 byte commands followed by variable arguments.
75 * All the commands identified by "code" are conditional jumps forward:
76 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
77 * length of the command and its arguments.
78 */
79
80struct inet_diag_bc_op {
81	unsigned char	code;
82	unsigned char	yes;
83	unsigned short	no;
84};
85
86enum {
87	INET_DIAG_BC_NOP,
88	INET_DIAG_BC_JMP,
89	INET_DIAG_BC_S_GE,
90	INET_DIAG_BC_S_LE,
91	INET_DIAG_BC_D_GE,
92	INET_DIAG_BC_D_LE,
93	INET_DIAG_BC_AUTO,
94	INET_DIAG_BC_S_COND,
95	INET_DIAG_BC_D_COND,
96	INET_DIAG_BC_DEV_COND,   /* u32 ifindex */
97	INET_DIAG_BC_MARK_COND,
98	INET_DIAG_BC_S_EQ,
99	INET_DIAG_BC_D_EQ,
100	INET_DIAG_BC_CGROUP_COND,   /* u64 cgroup v2 ID */
101};
102
103struct inet_diag_hostcond {
104	__u8	family;
105	__u8	prefix_len;
106	int	port;
107	__be32	addr[];
108};
109
110struct inet_diag_markcond {
111	__u32 mark;
112	__u32 mask;
113};
114
115/* Base info structure. It contains socket identity (addrs/ports/cookie)
116 * and, alas, the information shown by netstat. */
117struct inet_diag_msg {
118	__u8	idiag_family;
119	__u8	idiag_state;
120	__u8	idiag_timer;
121	__u8	idiag_retrans;
122
123	struct inet_diag_sockid id;
124
125	__u32	idiag_expires;
126	__u32	idiag_rqueue;
127	__u32	idiag_wqueue;
128	__u32	idiag_uid;
129	__u32	idiag_inode;
130};
131
132/* Extensions */
133
134enum {
135	INET_DIAG_NONE,
136	INET_DIAG_MEMINFO,
137	INET_DIAG_INFO,
138	INET_DIAG_VEGASINFO,
139	INET_DIAG_CONG,
140	INET_DIAG_TOS,
141	INET_DIAG_TCLASS,
142	INET_DIAG_SKMEMINFO,
143	INET_DIAG_SHUTDOWN,
144
145	/*
146	 * Next extenstions cannot be requested in struct inet_diag_req_v2:
147	 * its field idiag_ext has only 8 bits.
148	 */
149
150	INET_DIAG_DCTCPINFO,	/* request as INET_DIAG_VEGASINFO */
151	INET_DIAG_PROTOCOL,	/* response attribute only */
152	INET_DIAG_SKV6ONLY,
153	INET_DIAG_LOCALS,
154	INET_DIAG_PEERS,
155	INET_DIAG_PAD,
156	INET_DIAG_MARK,		/* only with CAP_NET_ADMIN */
157	INET_DIAG_BBRINFO,	/* request as INET_DIAG_VEGASINFO */
158	INET_DIAG_CLASS_ID,	/* request as INET_DIAG_TCLASS */
159	INET_DIAG_MD5SIG,
160	INET_DIAG_ULP_INFO,
161	INET_DIAG_SK_BPF_STORAGES,
162	INET_DIAG_CGROUP_ID,
163	INET_DIAG_SOCKOPT,
164	__INET_DIAG_MAX,
165};
166
167#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
168
169enum {
170	INET_ULP_INFO_UNSPEC,
171	INET_ULP_INFO_NAME,
172	INET_ULP_INFO_TLS,
173	INET_ULP_INFO_MPTCP,
174	__INET_ULP_INFO_MAX,
175};
176#define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)
177
178/* INET_DIAG_MEM */
179
180struct inet_diag_meminfo {
181	__u32	idiag_rmem;
182	__u32	idiag_wmem;
183	__u32	idiag_fmem;
184	__u32	idiag_tmem;
185};
186
187/* INET_DIAG_SOCKOPT */
188
189struct inet_diag_sockopt {
190	__u8	recverr:1,
191		is_icsk:1,
192		freebind:1,
193		hdrincl:1,
194		mc_loop:1,
195		transparent:1,
196		mc_all:1,
197		nodefrag:1;
198	__u8	bind_address_no_port:1,
199		recverr_rfc4884:1,
200		defer_connect:1,
201		unused:5;
202};
203
204/* INET_DIAG_VEGASINFO */
205
206struct tcpvegas_info {
207	__u32	tcpv_enabled;
208	__u32	tcpv_rttcnt;
209	__u32	tcpv_rtt;
210	__u32	tcpv_minrtt;
211};
212
213/* INET_DIAG_DCTCPINFO */
214
215struct tcp_dctcp_info {
216	__u16	dctcp_enabled;
217	__u16	dctcp_ce_state;
218	__u32	dctcp_alpha;
219	__u32	dctcp_ab_ecn;
220	__u32	dctcp_ab_tot;
221};
222
223/* INET_DIAG_BBRINFO */
224
225struct tcp_bbr_info {
226	/* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
227	__u32	bbr_bw_lo;		/* lower 32 bits of bw */
228	__u32	bbr_bw_hi;		/* upper 32 bits of bw */
229	__u32	bbr_min_rtt;		/* min-filtered RTT in uSec */
230	__u32	bbr_pacing_gain;	/* pacing gain shifted left 8 bits */
231	__u32	bbr_cwnd_gain;		/* cwnd gain shifted left 8 bits */
232};
233
234union tcp_cc_info {
235	struct tcpvegas_info	vegas;
236	struct tcp_dctcp_info	dctcp;
237	struct tcp_bbr_info	bbr;
238};
239#endif /* _UAPI_INET_DIAG_H_ */
240